<html>
 <head>
   <meta charset="utf-8">
  <title></title>
  <head>
    <body>
      <script type="text/javascript">
      function tulin(say){
        switch (say) {
          case '土豆':
            console.log('呦')
            break;
            case '呦':
              console.log('切克闹')
              break;
              case '阿':
                console.log('呀')
                break;
                case '嗨':
                  console.log('嘿')
                  break;
          default:

        }
      }

      tulin('土豆');
      tulin('呦');
      tulin('阿');
      tulin('嗨');
      </script>
    </body>
    </html>
